Question about 1995 GMC Sierra C1500

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Heater control Heater only blows on fast setting how to replace

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  • Wally Naismith Apr 25, 2013

    Thanks. Do you have to remove anything to get to it.

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  • 79 Answers

You Need To Replace The Motor Blower Resister Located On Pass Side Right Next To blower Motor

Posted on Apr 25, 2013

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Posted on Jan 02, 2017

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SOURCE: Blower Fan will not blow, we have already replaced Heater Control

you need to replace the fan ...its under the hood on the passenger side held in bt 3 screws and one plug this is the only motor on that side of the vehicle and only takes a half hour to change out

Posted on Jan 25, 2009

  • 1 Answer

SOURCE: heater temp control not working

We had the same problem in our 98 GMC Jimmy. Was blowing hot air everywher with everything shut off & air conditioning would not work. We found out it was the Blend Dood Actuator, it is located behind the glovebox. We purchased one on EBay & replaced it and are back on track again. Good luck!

Posted on Sep 10, 2009

alicantecoli
  • 22095 Answers

SOURCE: I have a 1995 GMC

well i would say so as well ,but in all honesty iam a europeon mechanic with limited experiance on american vehicles ,look on the water pipes into the heater for a electrical solonoid operating tap ,if none fitted then it could be the vacumn operated control flap on the heater box inside the vehicle

Posted on Jan 13, 2011

  • 645 Answers

SOURCE: Heater only blows cold air. I have replaced the

When the van is warmed completely check the top radiator hose by squeezing it together. If you can squeeze it without any resistance replace the radiator cap. The coolant is not circulating properly and can keep the heater from working. If you cannot squeeze the hose together than you may have a bad water pump. The water pump has fins inside of its' case. Those fins may be rusted completely off to where the water cannot circulate. You can check the circulation by feeling the top and bottom hose coming off of the water pump to the radiator. Both those hoses should be the same temp. If not I would consider changing the water pump.

Posted on Mar 11, 2011

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I have a 2000 jeep grand cherokee and my heater is not hot I checked the blend door behind glove box have flushed heater core and changed thermostat all is working wat else could it b


what engine? in WJ jeep.
Check all fuses yet>?
the water must be 180F or more, use a IR pyro gun aimed to thermostat housing yet,?
then check temp of both hoses,
all are 170F to 180f on a hot engine,
are both heater hoses hot , or just one, they must be equal and 170F +
did you scan the PCM first to see if there are HVAC errors.?
no?
does the blower sound normal on high?
does the blower blow, fast in all modes? strong.
does the heater work fan off, and levers set to full hot, in non recirc mode(fresh air ) moving car fast? and all vent modes?. moving fast?

checking dampers with no fancy scan tools is hard.
The jeep dealer can even sends commands to dampers.
but even a cheap one reports the errors. why not scan it.

the pure physics
  1. the coolant (water) must reach full 180F+
  2. the coolant must flow though the core, un restricted.
  3. the blower must blow or car move fast to move air flow.
  4. thru the core.
  5. the core must not be damper blocked.
there are simple tests for each , the last is more tricky.

Do you have AZC, option, automatic zone control? that be a key
diagnostic fact, that (has unique parts)
if yes, did you do the self test yet? and the many error codes it can produce? fsm chapter 24 shows 63 fault codes.
tell more get more.....

fSm quote on that page, AZC

(1) Depress the A/C and Recirc buttons at the
same time and hold. Rotate the left temperature control
knob clockwise (CW) one detent.
(2) If you continue to hold the A/C and Recirc buttons
depressed, the AZC control module will perform
a Segment Test of the vacuum fluorescent (VF) display.
In the Segment Test you should see all of the
display segments illuminate as long as both buttons
are held. If a display segment fails to illuminate, the
vacuum fluorescent display is faulty and the heater-
A/C control must be replaced.
(3) After viewing the Segment Test, release the
A/C and Recirc buttons and the display will clear
momentarily. If a 0 is displayed, then no faults
are set in the system.

Mar 23, 2015 | Jeep Cars & Trucks

2 Answers

2002 Ford Taurus, Heater blows cold air?


What have you checked so far ?
Radiator full of coolant ? Heater hoses getting hot ?

Feb 23, 2015 | 2002 Ford Taurus

1 Answer

97 heater controls


Does it blow any air out of the vents? if so then your heater hoses are stopped up, usually where they connect to your engine with dirt, grime, and corrosion.

Dec 10, 2013 | 1997 Ford Taurus

1 Answer

My Tempeture Gage in my car goes up way too fast and warm air is not blowing into the vehicle. There is occasionally a clanking noise near the heater core underneath the center of the dash, I have no idea...


recheck fluid fill and reservoir, Make sure waterpump is circulating, Is the occasional clank when operating controls? Possible air flow control door sticking or binding. Also a possible heat air bubble popping in core. Also fan blower motor making contact with housing or blower cage

Jan 17, 2011 | 1997 Chevrolet Blazer

3 Answers

ONLY WARM AIR FROM HEATER, REPLACED THERMOSTAT, STILL ONLY WARM AIR. UPPER RADIATOR HOSE & HEATER CORE HOSES ARE HOT.


The next possibility, if you haven't already thiught of it, is as simple as making sure there is enough water/antifreeze solution in your radiator. If the level is too low, your hoses will get hot, but there will not be enought water to circulate into your heater core.

Dec 17, 2010 | Ford F-150 Cars & Trucks

1 Answer

Heater blows hot and cold. Seems to be affected


Sounds like a vacuum check valve has failed. It is supposed to prevent bleedoff when you step on the throttle.

Jan 14, 2010 | 2001 Jaguar XJ8

2 Answers

2001 jeep grand cherokee has little or no heat from heater


I would recommend flushing your cooling system and especially your heater core.With water and compressed air. Possibly replacing your thermostat while your doing that too

Dec 05, 2009 | 2001 Jeep Grand Cherokee

1 Answer

2003 Ford F250, the heater does not blow hot air


check the heater temp. control pot under the hood, inline on one of your heater hoses, it may be sticking causing hot water to only get to your heater core when the engine is at high r.p.m.s

Oct 31, 2009 | 2003 Ford F250 Super Duty Crew Cab

2 Answers

'04 Jeep Grand Cherokee: Heats...but only through defrost vents.


Check the control cable that operates the diverter door in the heater box at both ends, to make sure that it operates the door when you move the control lever.

Jan 15, 2009 | 2000 Jeep Grand Cherokee

1 Answer

Heater only blows hot (well, warm) on full speed of fan


Replace the temp control on this car, it should be electrical control not cables.

Dec 03, 2008 | 2000 Ford Escort

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